0000000000293926

AUTHOR

Daniel Martí

showing 2 related works from this author

The impact of alpha1-adrenoceptors up-regulation accompanied by the impairment of beta-adrenergic vasodilatation in hypertension

2008

9 pages, 7 figures, 3 tables.-- PMID: 19060223 [PubMed]

medicine.medical_specialtyG-Protein-Coupled Receptor Kinase 2Adrenergic receptorSystolemedia_common.quotation_subjectAdrenergicVasodilationModels BiologicalRats Inbred WKYDownregulation and upregulationHeart RateRats Inbred SHRReceptors Adrenergic alpha-1Internal medicineReceptors Adrenergic betamedicineAnimalsHumansRNA MessengerReceptorInternalizationAortamedia_commonPharmacologybiologyChemistryKinaseBeta adrenergic receptor kinaseRatsUp-RegulationVasodilationEndocrinologyHypertensionbiology.proteinMolecular Medicine
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Bisbenzyltetrahydroisoquinolines, a New Class of Inhibitors of the Mitochondrial Respiratory Chain Complex I

2004

Four bisbenzyltetrahydroisoquinoline alkaloids (-)-medelline, (+)-antioquine, (+)-aromoline, and (+)-obamegine were isolated from the fruits of Xylopia columbiana. These compounds, the previously isolated alkaloids (+)-thaligrisine and (+)-isotetrandrine, as well as their O-acetylated derivatives were assayed on submitochondrial particles from beef heart as inhibitors of the mammalian respiratory chain. The results revealed that these alkaloids act as selective inhibitors of mitochondrial complex I in a 0.15 - 4.71 microM range. O-Acetylation, which increases their lipophilicity, considerably increased the inhibitory potency.

StereochemistryRespiratory chainAnnonaceaePharmaceutical ScienceBiologyBenzylisoquinolinesMitochondria HeartAnalytical Chemistrylaw.inventionElectron TransportInhibitory Concentration 50lawDrug DiscoveryAnimalsNADH NADPH Oxidoreductasesheterocyclic compoundsMitochondrial respiratory chain complex ISubmitochondrial particleEnzyme InhibitorsPharmacologyPlant ExtractsOrganic Chemistrybiology.organism_classificationElectron transport chainComplementary and alternative medicineBiochemistryAnnonaceaeLipophilicityMolecular MedicineCattlePhytotherapyXylopiaPhytotherapyPlanta Medica
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